Station operation method and apparatus in TV whitespace
First Claim
1. A method for a station to acquire information on an available channel for operation in a white space band, the method comprising:
- transmitting an available channel information request message to a device having database information;
receiving an available channel information response message from the device having database information, the available channel information response message comprising;
(a) a field for a device type to which the available channel information response message can be applied;
(b) a field for identifying an available channel;
(c) a field for information on a maximum allowable power level on the available channel;
(d) a field for information on valid time of the available channel; and
(e) a length field,wherein a triplet consisting of the (b), (c), and (d) fields is repeated by different numbers of times based on a value in the length field, if the field (a) corresponds to a fixed device or a device having an authority to directly access database information,wherein the (b) and (c) fields are repeated by different numbers of times based on the value in the length field, if the field (a) corresponds to a device not having the authority to directly access database information; and
communicating a signal on the available channel using the information of one or more of (a), (b), (c), and (d).
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Accused Products
Abstract
The present invention relates to a station (hereinafter, ‘STA’) operation method and apparatus in a TV whitespace. In a TVWS band, when an STA operating as an unlicensed device with permission to operate in an available channel not used by a licensed device needs to operate in the TVWS band by acquiring information on the available channel, the STA transmits an available channel information request message to a device having database information; receives, from the device having database information, an ACK message for the available channel information that includes (a) identification information on an available channel, (b) information on the maximum allowable power level in the available channel, and (c) information on valid time of the available channel; and transmits/receives a signal using the information of (a), (b) and (c), i.e., using the maximum allowable power level within the valid time in the available channel.
29 Citations
16 Claims
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1. A method for a station to acquire information on an available channel for operation in a white space band, the method comprising:
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transmitting an available channel information request message to a device having database information; receiving an available channel information response message from the device having database information, the available channel information response message comprising; (a) a field for a device type to which the available channel information response message can be applied; (b) a field for identifying an available channel; (c) a field for information on a maximum allowable power level on the available channel; (d) a field for information on valid time of the available channel; and (e) a length field, wherein a triplet consisting of the (b), (c), and (d) fields is repeated by different numbers of times based on a value in the length field, if the field (a) corresponds to a fixed device or a device having an authority to directly access database information, wherein the (b) and (c) fields are repeated by different numbers of times based on the value in the length field, if the field (a) corresponds to a device not having the authority to directly access database information; and communicating a signal on the available channel using the information of one or more of (a), (b), (c), and (d). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A station acquiring information on an available channel for operating in a white space band, the station comprising:
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a transceiver configured to; transmit an available channel information request message to a device having database information; and receive, from the device having database information, an available channel information response message comprising; (a) a field for a device type to which the available channel information response message can be applied; (b) a field for identifying an available channel; (c) a field for information on a maximum allowable power level on the available channel; (d) a field for information on valid time of the available channel; and (e) a length field, wherein a triplet consisting of the (b), (c), and (d) fields is repeated by different numbers of times based on a value in the length field, if the field (a) corresponds to a fixed device or a device having an authority to directly access database information, wherein the (b) and (c) fields are repeated by different numbers of times based on the value in the length field, if the field (a) corresponds to a device not having the authority to directly access database information; and a processor configured to control the transceiver to communicate a signal on the available channel using the information of one or more of (a), (b), (c), and (d). - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification